Forks of your project do not require open-sourcing their code if they adhere to the terms of the royalty-free license, which include attributions and excluding

Forks of your project do not require open-sourcing their code if they adhere to the terms of the royalty-free license, which include attributions and excluding usage on embedded devices. (Alternatively, they can get a paid license) > why would anyone choose the potentially expensive commercial option The paid option is for those using Slint in embedded devices (which is not permitted by the royalty-free license) or for those who prefer not to include attribution to Slint in their program.